When test driving the car after the engine went in I found it hit a horrible resonance at 50 MPH and made loud roaring noises from the rear. At lower speeds there is a definite speed dependent "whoosh, whoosh, whoosh" noise. I replaced wheel bearings a couple of years ago and would like to think that they have not worn out with the limited use my son has given the car. My suspicion is the differential.
Can you suggests tests or things to listen for that would indicate a failing rear end?
If it is the differential, I have a spare that came with a parts car but its condition is unknown. Reading Bentley, it sounds nearly impossible to rebuild one at home but perhaps some of the bearings can be replaced. Are there online resources that are better/simpler than Bentley that can walk me through a reconditioning process if not a full rebuild?
I may not need to do anything but I am curious if this is an area that I really do have to leave for a pro.
Doug L.
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